文献类型：期刊文献

英文题名：A Heterostructured Gel Polymer Electrolyte Modified by MoS2 for High-Performance Lithium-Sulfur Batteries

作者：Chi, Ziyun[1];Ding, Jianlong[1];Ding, Chao[1];Cui, Bowen[1];Wang, Wenqiang[1];Wang, Gengchao[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2023

卷号：15

期号：33

起止页码：39342

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20233414615179);WOS:【SCI-EXPANDED(收录号:WOS:001044569100001)】；

基金：We greatly appreciate the financial support from the National Natural Science Foundation of China (21875065, 22109045), the China Postdoctoral Science Foundation Special Fund (2022T150211), and the China Postdoctoral Science Foundation (2021M701191).

语种：英文

外文关键词：lithium-sulfurbatteries; gel electrolyte; heterostructure; molybdenum disulfide; multilayershielding

摘要：InLi-S batteries, the shuttle effect of polysulfide lithium(LiPS) on the cathode side and the growth of lithium dendrites onthe anode side are two major problems that lead to an insufficientcycle life. Herein, in light of the challenges brought on by the differentchemical environments on both sides of Li-S batteries, a heterostructuredpoly(ethyl acrylate-co-ionic liquid) gel electrolytewith a single-sided electrocatalytic reduced graphene oxide/MoS2 coating (MoS2@rGO-GPE) was developed in orderto assemble a high-performance Li-S battery with a self-supportinggraphene sulfur cathode. In such a device architecture, there is multipositionsuppression of the shuttle effect; that is, the confinement of thegraphene foam, the catalysis of the MoS2 composite, andthe capture of the gel polymer electrolyte. Our results show thatthe ionic conductivity of the heterostructured electrolyte is 1.98mS cm(-1), and the Li ion transference number reaches0.81. The assembled lithium-sulfur battery displays a highinitial discharge capacity of 1027 mAh g(-1) at 0.1C, superior cycle stability (80% capacity retention after 500 cycles),and excellent rate performance. This design strategy provides a valuableroute for the development of high-performance lithium-sulfurbatteries.